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Comedau, Asteroidau, a Meteorau / Comets, Asteroids, and Meteors - Lexicon

Comet
Comet
Asteroid
Asteroid
Meteor
Meteor
Orbit
Orbit
Niwclews
Nucleus
Cynffon
Tail
Meteorit
Meteorite
Crater
Crater
Effaith
Impact
System yr Haul
Solar System
Llwch
Dust
Darn
Fragment
Llwybr
Trajectory
Gwrthrych Agos at y Ddaear
Near-Earth Object
Cawod Meteor
Meteor Shower
Seryddiaeth
Astronomy
Gofod
Space
Disgyrchiant
Gravity
Coma
Coma
Rock y Gofod
Space Rock
Rhewllyd
Icy
Creigiog
Rocky
Cynffon Llwch
Dust Tail
Cynffon Nwy
Gas Tail
Gwynt Solar
Solar Wind
Pêl Dân
Fireball
Bolide
Bolide
Cylchdroi
Orbiting
Alldaflu
Ejecta
Arwyneb
Surface
Darnio
Fragmentation
Agos
Close Approach
Maint
Magnitude, Size
Arsylwi
Observation
Archwiliwr
Explorer
Astrobioleg
Astrobiology
Gwrthdrawiad
Collision
Albedo
Albedo
llong ofod
Spacecraft
Effaith Meteorit
Meteorite Impact
Telesgop
Telescope
Nefol
Celestial
Llwybr Llwch
Dust Trail
Ffrwydrad Bolid
Bolide Explosion
Asteroid Ger y Ddaear
Near-Earth Asteroid
Digwyddiad Effaith
Impact Event
Corff Bach
Small Body
Rhyngblanedol
Interplanetary